设[img=15x19]18031b88b14d8fc.png[/img]是由圆周[img=89x26]18031b88b8605fc.png[/img]及坐标轴所围成的在第一象限内的闭区域, 则[img=198x48]18031b88c3d8712.png[/img]____
A: [img=95x39]18031b88cbe8699.png[/img]
B: [img=95x39]18031b88d3cb1a8.png[/img]
C: [img=95x39]18031b88dce048d.png[/img]
D: [img=95x39]18031b88e53ce4e.png[/img]
A: [img=95x39]18031b88cbe8699.png[/img]
B: [img=95x39]18031b88d3cb1a8.png[/img]
C: [img=95x39]18031b88dce048d.png[/img]
D: [img=95x39]18031b88e53ce4e.png[/img]
举一反三
- 若f(x)+f(-x)=0, 则[img=95x39]17da608af452d96.jpg[/img]. 若f(x)=f(-x), 则 [img=170x38]17da60541207426.jpg[/img]
- 3.[img=95x39]18032e1fe46328c.png[/img](x为不等于零的常数,[img=58x23]18032e1fedb374d.png[/img]) A: [img=18x14]18032e1ff7227d6.png[/img] B: 0 C: 1 D: x
- 3.[img=95x39]18032e2979c0979.png[/img](x为不等于零的常数,[img=58x23]18032e2981d441b.png[/img]) A: [img=18x14]18032e298a29d3a.png[/img] B: 0 C: 1 D: x
- 设A= [img=112x101]17d61d6849c091d.png[/img],则代数余子式[img=26x25]17d61d68517d114.png[/img] = ( ) A: 99 B: -99 C: 88 D: -88
- 3.[img=95x39]18032e2979c0979.png[/img](x为不等于零的常数,[img=58x23]18032e2981d441b.png[/img]) 未知类型:{'options': ['', '0', '1', 'x'], 'type': 102}